| Diagram | Fig. 12 — FRAME · ref 22 |
| Subsystem | frame |
| Listed in parts books | 1960–1970 |
Spring washer
A general-purpose spring washer used across frame, suspension, footrest, and engine fitting points, later renumbered 60-4251.
PCW73A is a spring washer that shows up all over the catalog record - frame, swinging fork and suspension units, footrests, engine and gearbox fittings, even the exhaust pipe and silencer figures. That kind of spread tells you it's a general-purpose fastener washer used wherever a bolt needed a bit of spring tension under the head to keep it from working loose, rather than one dedicated job on the bike.
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Later catalogs list this part under the number 60-4251, so if your parts book or an older invoice shows PCW73A, that's the same washer, just renumbered down the line.
Given how many different assemblies call for this washer, it's worth having a few in the parts bin rather than ordering one at a time. The catalog entry doesn't tie it to a single specific spot, so match it up against the fastener you're working on before you buy.
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